Icom IC-R75 User Manual
INSTR UCTION MANUAL
COMMUNICATIONS RECEIVER
iR75
i
IMPORTANT
READ THIS INSTRUCTION MANUAL
CAREFULLY before attempting to operate the re-
ceiver.
SAVE THIS INSTRUCTION MANUAL. This
manual contains important safety and operating instructions for the IC-R75.
EXPLICIT DEFINITIONS
RNEVER apply AC to the [DC13.8V] jack on the re-
ceiver rear panel.This could cause a fire or ruin the receiver.
RNEVER apply more than 16 V DC, such as a 24 V
battery, to the [DC13.8V] jack on the receiver rear
panel.This could cause a fire or ruin the receiver.
RNEVER let metal, wire or other objects touch any
internal part or connectors on the rear panel of the receiver. This may result in an electric shock.
NEVER expose the receiver to rain, snow or any liq-
uids.
AVOID using or placing the receiver in areas with tem-
peratures below –10°C (+14°F) or above +60°C
(+140°F). Be aware that temperatures on a vehicle’s
dashboard can exceed 80°C (+176°F), resulting in permanent damage to the receiver if left there for extended periods.
AVOID placing the receiver in excessively dusty environments or in direct sunlight.
AVOID placing the receiver against walls or putting
anything on top of the receiver. This will obstruct heat
dissipation.
Place unit in a secure place to avoid inadvertent use by children.
During mobile operation, DO NOT operate the receiver
without running the vehicle’s engine.When receiver
power is ON and your vehicle’s engine is OFF, the vehicle’s battery will soon become exhausted.
Make sure the receiver power is OFF before starting
the vehicle.This will avoid possible damage to the receiver by ignition voltage spikes.
The receiver comes with the following accessories.
Qty.
q AC adapter (AD-55/A/V)* ..................................... 1
w DC power cable (OPC-869)* ............................... 1
e Fuse (FGB 3 A; internal use) ............................... 1
r Fuse (FGB 3 A; for DC cable)* ............................ 2
*Either AC adapter + 1 fuse (q, e) or DC power cable + 3
fuses (w, e, r) are supplied depending on versions.
PRECAUTIONS
SUPPLIED ACCESSORIES
Versions of the IC-R75 which display the “CE” symbol on
the serial number seal comply with the European harmonised standard ETS300 684 (EMC product standard
for Commercially Available Amateur Radio Equipment).
WORD
R
WARNING
CAUTION
NOTE
DEFINITION
Personal injury, fire hazard or electric
shock may occur.
If disregarded, inconvenience only.
No risk of personal injury, fire or
electric shock.
Equipment damage may occur.
qw
er
1
1
TABLE OF CONTENTS
IMPORTANT .............................................................. i
EXPLICIT DEFINITIONS ........................................... i
PRECAUTIONS ......................................................... i
SUPPLIED ACCESSORIES ...................................... i
1 TABLE OF CONTENTS ....................................... 1
2 PANEL DESCRIPTION ................................... 2–6
■Front panel ........................................................ 2
■Function display ................................................. 5
■Rear panel ......................................................... 6
3 INSTALLATION AND CONNECTIONS ......... 7–10
■Grounding .......................................................... 7
■Receiver stand ................................................... 7
■Optional bracket and carrying handle ................ 7
■Connections ...................................................... 8
■Antenna connection ........................................... 9
■Tape recorder connections ................................ 9
■Transceive function ............................................ 9
■FSK and AFSK (SSTV) connections ............... 10
■Connecting to a PC ......................................... 10
4 FREQUENCY SETTING .............................. 11–13
■Read me first ................................................... 11
■Using the keypad ............................................. 11
■Frequency setting ............................................ 12
■Dial lock function ............................................. 13
5 RECEIVE FUNCTIONS ............................... 14–20
■Mode selection ................................................ 14
■Squelch and RF gain ....................................... 14
■Twin PBT operation ......................................... 15
■Noise blanker ................................................... 15
■Preamp ............................................................ 16
■Attenuator ........................................................ 16
■AGC time constant .......................................... 16
■Antenna selection ............................................ 16
■CW reverse mode ............................................ 17
■CW pitch control .............................................. 17
■RTTY reverse mode ........................................ 17
■Filter selection ................................................. 18
■Filter set mode ................................................. 19
■Optional noise reduction function .................... 20
■Optional auto notch function ............................ 20
6 MEMORY OPERATION ............................... 21–24
■Memory channels ............................................ 21
■Memory channel selection ............................... 21
■Memory channel programming ........................ 22
■Frequency transferring .................................... 23
■Memory names ................................................ 24
■Memory clearing .............................................. 24
7 SCANS ........................................................ 25 –27
■Scan types ....................................................... 25
■Preparation ...................................................... 25
■Programmed scan operation ........................... 26
■Memory/select memory scan operation .......... 26
■Setting select memory channels ..................... 26
■Priority watch operation ................................... 27
■Auto memory write scan operation .................. 27
8 CLOCK AND TIMERS ................................. 28–29
■Setting the current time ................................... 28
■Setting power-on time ...................................... 28
■Setting power-off time ...................................... 29
■Setting sleep timer period ................................ 29
9 SET MODE .................................................. 30–33
■Set mode description ....................................... 30
10 OPTION INSTALLATIONS ....................... 34–35
■Opening the receiver’s case ............................ 34
■CR-282 HIGH STABILITY CRYSTAL UNIT .......... 34
■UT-102 VOICE SYNTHESIZER UNIT .................. 34
■UT-106 DSP UNIT ............................................. 35
■Optional IF filters ............................................. 35
11 MAINTENANCE ........................................ 36–37
■Troubleshooting ............................................... 36
■Resetting the CPU ........................................... 36
■Fuse replacement ............................................ 37
■Clock backup battery replacement .................. 37
12 SPECIFICATIONS ........................................... 38
13 OPTIONS ......................................................... 39
14 CONTROL COMMAND ............................ 40–43
■Remote jack (CI-V) information ....................... 40
■ Front panel
q POWER SWITCH [POWER]
➥Push momentarily to turn power ON.
•Turn the optional DC power supply ON in advance.
➥Push for 2 sec.to turn power OFF.
w HEADPHONE JACK [PHONES] (p. 8)
Accepts headphones.
•When headphones are connected, the internal speaker
or connected external speaker does not function.
e AF CONTROL [AF] (inner control)
Varies the audio output level from the speaker.
r RF GAIN/SQUELCH CONTROL [RF/SQL]
(outer control; pgs. 14, 30)
Adjusts the squelch threshold level.The squelch removes noise output from the speaker (closed condition) when no signal is received.
•The squelch is particularly effective for FM. It is also
available for other modes.
•The control can be set as the squelch plus RF gain controls or squelch control only (RF gain is fixed at maximum) in set mode.
t PASSBAND TUNING CONTROLS [TWIN PBT]
(p.15)
Adjust the receiver’s “passband width” of the 455
kHz and 9 kHz IF filters for the inner and outer controls, respectively.
•Set to the center positions when not in use.
y CLOCK MODE SWITCH [CLOCK] (p.28)
Toggles between frequency indication and clock indication when pushed.
u ANTENNA SELECTOR/SET MODE SWITCH
[ANT/SET] (pgs. 16, 30)
➥While in a frequency indication, enters set mode
when pushed.
➥While in a frequency indication, toggles between
the antenna 1 and 2 connectors when pushed for
2 sec.
➥While in the clock indication, enters time setting
condition when pushed for 2 sec.
➥While in a timer indication, toggles the timer ON
or OFF when pushed.
i TUNING DIAL
Changes the displayed frequency, selects set mode
items, etc.
o TUNING DIAL TENSION LATCH
Adjusts the tension of the tuning dial.
!0 LOCK/SPEECH SWITCH [LOCK] (pgs. 13, 34)
➥Toggles the frequency lock function ON and OFF.
➥Announces the selected readout frequency when
an optional UT-102 is installed and when pushed
for 2 sec.
2
2
PANEL DESCRIPTION
FIL
TS
CW/RTTY
FM
SSB
AM
PHONES
POWER
RF/SQL TWIN PBTAF
COMMUNICATIONS RECEIVER
DN UP
12
ABC3DEF
4
GHI5JKL6MNO
7
PRS8TUV9WXY
. 0
QZ
ENT
V/M MW
SEL SCAN
CLR
LOCK
AGCNBANFNRAT T
P.AMP
SET
CLOCK
ANT
Function display (p. 5)Speaker
q
w
e r t y i o !0 !1
!3
!4
!5!6!7!8
!2
u
3
2
PANEL DESCRIPTION
!1 MEMORY CHANNEL UP/DOWN SWITCHES
[√√DN]/[UP∫∫] (p.21)
➥Select a memory channel.
➥Select a set mode contents while in set mode.
➥Select a timer or time indication while in clock in-
dication.
➥Select a filter set mode contents while in filter set
mode.
!2 MEMORY WRITE SWITCH [MW] (pgs. 22, 27)
➥Stores the displayed frequency and operating
mode into the selected memory channel when
pushed for 2 sec.
➥Toggles the programmed scan and auto memory
write scan when pushed.
!3 CLEAR SWITCH [CLR] (p.24)
➥Clears the input digits while inputting a frequency
or memory channel number.
➥Clears the selected memory channel contents
when pushed for 2 sec.in memory mode.
•This switch does not function in VFO mode.
!4 VFO/MEMORY SWITCH [V/M] (pgs. 21, 23)
➥Toggles the operating mode between VFO mode
and memory mode when pushed.
➥Selects a memory channel for inputting a mem-
ory channel number when pushed.
➥Transfers the memory contents to VFO when
pushed for 2 sec.
!5 KEYPAD (pgs. 11, 21)
The keypad can be used for several functions as
below:
•Keypad then [ENT]
— Direct frequency input.
•Keypad then [V/M]
— Memory channel selection.
•[ENT] then keypad in memory name indication
mode
— Alphanumeric input for memory name, etc.
!6 QUICK TUNING STEP SWITCH [TS] (pgs. 12, 13)
➥Selects a quick tuning step or turns the quick tun-
ing step OFF.
•While the quick tuning indicator (")
is displayed, the
frequency can be changed in kHz or MHz steps.
➥While the quick tuning step is OFF, turns the 1 Hz
step ON and OFF when pushed for 2 sec.
•1 Hz indication appears and the frequency can be
changed in 1 Hz steps.
➥While the kHz quick tuning step is selected, en-
ters tuning step set mode when pushed for 2 sec.
➥While the memory name indication is selected in
memory mode, pushing this switch shows the operating frequency; and rotating the tuning dial
while pushing this switch changes the frequency
temporally.
!7 FILTER SWITCH [FIL] (pgs. 18, 19)
➥Push momentarily to toggle between the pre-pro-
grammed normal, wide and narrow IF filters for
the selected operating mode.
➥Push for 2 sec.to enter filter set mode.
!8 MODE SWITCHES [SSB]/[CW/RTTY]/[AM]/[FM]
(p.14)
Select an operating mode.
•Push [SSB] to toggle between LSB and USB.
•Push [CW/RTTY] to toggle between CW and RTTY.
•Push [CW/RTTY] for 2 sec.to toggle between CW and
CW reverse or RTTY and RTTY reverse.
•Push [AM] to toggle between AM and S-AM.
•Push [FM] to select FM.
4
2
PANEL DESCRIPTION
■ Front panel (continued)
!9 PREAMP SWITCH [P.AMP] (p. 16)
Push to toggle between preamp-1 and preamp-2 or
turn the preamp OFF.
@0 ATTENUATOR SWITCH [ATT] (p. 16)
Push to toggle the 20 dB attenuator function ON
and OFF.
@1 NOISE REDUCTION SWITCH [NR] (p.20)
➥Toggles the optional noise reduction function ON
and OFF when pushed. Functions in SSB, CW
and RTTY modes.An optional UT-106 DSP UNIT is
required.
➥Enters noise reduction level set mode when
pushed for 2 sec.An optional UT-106 DSP UNIT is
required.
@2 AUTOMATIC NOTCH FILTER SWITCH [ANF]
(p.20)
Push to turn the optional automatic notch filter for
receiving AM signals ON and OFF. An optional
UT-106 DSP UNIT is required.
@3 NOISE BLANKER SWITCH [NB] (p.15)
Toggles the noise blanker ON and OFF.The noise
blanker reduces pulse-type noise such as that generated by automobile ignition systems.This function
is not effective for FM, or non pulse-type noise.
@4 AGC SWITCH [AGC] (p. 16)
➥Toggles the AGC (Automatic Gain Control) time
constant fast and slow when pushed.
➥Toggles the AGC function ON and OFF when
pushed for 2 sec.
@5 SELECT SWITCH [SEL] (pgs. 24, 26)
➥Toggles the select memory setting ON and OFF
when pushed in memory mode.
➥Toggles the memory name indication ON and
OFF when pushed for 2 sec.in memory mode.
@6 SCAN SWITCH [SCAN] (p.25)
➥Push momentarily to start/stop the programmed
scan in VFO mode.
➥Push momentarily to start/stop the memory scan
in memory mode.
➥Push for 2 sec. to start the pr iority watch in VFO
mode.
•Push [SCAN] again to cancel the priority watch.
FIL
TS
CW/RTTY
FM
SSB
AM
PHONES
POWER
RF/SQL TWIN PBTAF
COMMUNICATIONS RECEIVER
DN UP
12
ABC3DEF
4
GHI5JKL6MNO
7
PRS8TUV9WXY
. 0
QZ
ENT
V/M MW
SEL SCAN
CLR
LOCK
AGCNBANFNRAT T
P.AMP
SET
CLOCK
ANT
Function display (p. 5)
!9 @0 @1 @2 @3 @4
@6
@5
■ Function display
q TIMER INDICATOR (p.28)
Appears when power on/off timer or sleep timer is
in use.
w DSP UNIT INDICATOR (p.35)
Appears when an optional UT-106 DSP UNIT is installed.
e AUTOMATIC NOTCH FILTER INDICATOR (p. 20)
Appears when the optional automatic notch filter is
in use.
r NOISE REDUCTION INDICATOR (p.20)
Appears when the optional noise reduction function
is in use.
t LOCK INDICATOR (p.13)
Appears when the dial lock function is in use.
y SIGNAL METER
➥Shows the relative receive signal strength.
➥Shows the S-meter squelch level when used.
u PREAMP INDICATOR (p.16)
Appears when antenna preamp-1 or preamp-2 is in
use.
i ATTENUATOR INDICATOR (p.16)
Appears when the attenuator function is in use.
o ANTENNA INDICATORS (p.16)
Indicate which antenna connector is in use.
!0 NOISE BLANKER INDICATOR (p.15)
Appears when the noise blanker function is in use.
!1 SCAN INDICATOR (p.25)
➥Appears when scan or priority watch is activated.
➥Flashes when scan or priority watch is paused.
!2 AGC INDICATORS (p. 16)
➥“AGC” appears when slow AGC time constant is
selected.
➥“F.AGC” appears when fast AGC time constant is
selected.
➥“AGC OFF” appears when the AGC function is
turned OFF.
➥“F.AGC” blinks while scanning or while using
band scope via an optional RS-R75.
!3 MEMORY MODE INDICATOR (p. 21)
Indicates memory mode is selected.
!4 VFO MODE INDICATOR
Indicates VFO mode is selected.
!5 MEMORY CHANNEL NUMBER READOUT
(p.21)
➥Shows the selected memory channel number.
➥“S” appears when the displayed memory channel
is designated as a select memory channel.
!6 BLANK MEMORY INDICATOR
Shows that the displayed memor y channel is not
programmed.
•This indicator appears both in VFO and memory modes.
!7 FREQUENCY READOUT
Shows the operating frequency.
!8 RECEIVE INDICATOR
Appears while receiving a signal or when the
squelch is open.
!9 MODE INDICATORS (p.14)
Indicate the selected operating mode.
@0 REVERSE MODE INDICATOR (p.17)
Indicates a reverse operating mode is selected.
@1 WIDE/NARROW FILTER INDICATORS (p.18)
➥“ç” appears when the wide IF filter is selected.
➥“ã” appears when the narrow IF filter is selected.
5
2
PANEL DESCRIPTION
DSP
BLANKBLANK
S
RTTY
PREAMP
TIMER
S1 3
5
7
9
20 40
60
dB
F.AGC OFFANTATT
LSBUSBCWS-AMFM
REV
NW
ANF
NR
LOCK
R X
MEMO
SCAN
N B
VFO
1122
q
w
e
r
t
y
uio!0!1!2!3!4
!5
!6
!7
!8!9@0@1
6
2
PANEL DESCRIPTION
■ Rear panel
q RECORDER REMOTE JACK [REC REMOTE]
Controls the running of a tape recorder for recording. Connects to the REMOTE jack on a tape
recorder.
•This function can be turned OFF in set mode. (p.32)
w RECORDER JACK [REC]
Outputs receive audio signals.Connects to the AUX
or LINE IN jack on a tape recorder.
e RS-232C CONNECTOR [RS-232C]
Connects an RS-232C cable. An RS-232C cable
can be used to connect the receiver to a PC.In this
way commands can be sent to the receiver via the
PC.
r CI-V REMOTE CONTROL JACK [REMOTE]
Allows connection to an Icom CI-V system transceiver or another receiver for the transceive function. Also connects to a PC with several receivers
for command control via an optional CT-17 CI-V
LEVEL CONVERTER.
t EXTERNAL SPEAKER JACK [EXT SP]
Connects an 8 Ω external speaker, if desired.
•When an external speaker is connected, the internal
speaker does not function.
y MUTE CONTROL JACK [MUTE]
Mutes audio outputs and attenuates the receive signal input when grounded. Used for CI-V transceive
operation with a transceiver.
u GROUND TERMINAL [GND] (p. 7)
Connects the black terminal to ground.
i ANTENNA 2 TERMINAL [ANT2] (p. 9)
Connects the red terminal to a 500 Ω long wire antenna.
o ANTENNA 1 CONNECTOR [ANT1] (p. 9)
Connects a 50 Ω antenna with a PL-259 connector
and a 50 Ω coaxial cable.
!0 DC POWER JACK [DC13.8V] (p. 8)
➥Connects the supplied AC adapter for versions
with an AC adapter.
➥Connects to a 13.8 V DC po wer source using the
supplied DC cable for versions without an AC
adapter.
•Current of 1.5 A or greater is required.
DO NOT use a cigarette lighter socket as a
power source when operating in a vehicle. The
plug may cause voltage drops and ignition noise
may be superimposed onto received audio.
qw rt y uie o!0
■ Grounding
To prevent accidents involving electr icity and interference from transceivers, ground the receiver through
the [GND] terminal on the rear panel.
For best results, connect a heavy gauge wire or strap
to a long earth-sunk copper rod. Make the distance between the [GND] terminal and ground as short as possible.
R WARNING: NEVER connect the [GND]
terminal to a gas or electric pipe, since the connection could cause an explosion or electric shock.
■ Receiver stand
The base of the receiver has an adjustable stand for
desktop use. Set the stand to one of two angles depending on your operating conditions.
■ Optional bracket and
carrying handle
D Mounting bracket
An optional IC-MB5 MOBILE MOUNTING BRACKET is available to install the radio under a table, on a wall, in a
vehicle, etc.
Select an area to mount the receiver keeping in mind
that the weight of the receiver is approx.3 kg.
D Carrying handle
An optional handle allows you to easily carry and
transport the receiver.
Attach the MB-23 CARRYING HANDLE with the supplied
rubber feet as shown.
3
7
INSTALLATION AND CONNECTIONS
Flat washer
8
3
INSTALLATION AND CONNECTIONS
FIL
TS
CW/RTTY
FM
SSB
AM
PHONES POWER
RF/SQL TWIN PBTAF
COMMUNICATIONS RECEIVER
DN UP
12
ABC3DEF
4z5
JKL6MNO
7
PRS8TUV9WXY
. 0
z
ENT
V/M MW
SEL SCAN
CLR
LOCK
AGCNBANFNRAT T
P.AMP
SET
CLOCK
ANT
AD-55/A/V or
OPC-869
HEADPHONES
REMOTE (p. 9, 32)
Used for computer control and transceive.
ANTENNA 2
Connect a long wire
antenna; impedance: 500 Ω.
ANTENNA 1 (p. 9)
Connect a Yagi antenna;
impedance: 50 Ω.
EXTERNAL
SPEAKER (p. 39)
SP-21
GROUND (p. 7)RS-232C JACK (p. 10)
MUTE CONTROL
JACK (p. 6)
RECORDER/
RECORDER
CONTROL (p. 9)
DC13.8V JACK
■ Connections
■ Tape recorder connections
■ Transceive function
9
3
INSTALLATION AND CONNECTIONS
PL-259 CONNECTOR INSTALLATION EXAMPLE
■ Antenna connection
Antennas play a very important role in receiver operation.Connecting a poor quality antenna to the receiver
will result in less than optimum performance.
When using a 50 Ω antenna, use [ANT1] connector for
connection. When using a 500 Ω long wire antenna,
use [ANT2] terminal for connection.
The [REC OUT] jack has 350 mV rms/4.7 kΩ output
for connection to other audio equipment.
Icom CI-V transceivers or receivers can be connected
via the [REMOTE] jack.The frequency and mode become the same* when either radio is changed.
* When a set frequency is out-of-range for one of the con-
nected transceivers or receivers , the connected r adio’s fre-
quency/mode does not change.
Be sure the “CIV TRn”item is turned ON in set mode (p.32).
q
Coupling ring
w
30 mm
10 mm (soft solder)
10 mm
Soft
solder
1–2 mm
Slide the coupling ring
down. Strip the cable
jacket and soft solder.
Strip the cable as
shown at left. Soft
solder the center conductor.
[REC REMOTE] jack: Grounds when a signal is
received and squelch opens. If a tape recorder
has a control terminal, this jack can be used for
recording control. (1 A/DC max.)
e
r
solder solder
Slide the connector
body on and solder it.
Screw the coupling ring
onto the connector
body.
(10 mm ≈
3
⁄8 in)
IC-R75
[AUX IN] or
[LINE IN] jack
IC-R75
[REMOTE]
[REC
REMOTE]
[REC OUT]
350 mVrms
4.7 kΩ
Icom CI-V transceiver/receiver
Connect to [REMOTE] jack
10
3
INSTALLATION AND CONNECTIONS
■ Connecting to a PC
To connect a terminal unit, TNC or scan converter,
refer to the diagram below.
q Connect a terminal unit as below.
w Select RTTY mode (or USB, CW modes for HF
band data communications).
e Set the receiver to the desired frequency as at
right.
r Set the connected terminal unit to the appropriate
settings.
•Refer to the terminal unit’s instructions.
The optional 250 Hz CW narrow filters may not
pass RTTY signals.Be sure to select the appropriate IF filters corresponding to the signal width.
(pgs.18, 19)
Frequency settings depend on the mode used.
FM mode:
[Setting frequency (displayed freq.)]=[Desired
freq.]
USB mode:
[Setting frequency (displayed freq.)]=[Desired
freq.]–[Center of Mark and Space freq.]
CW narrow mode:
[Setting frequency (displayed freq.)]=[Desired
freq.]–[Center of Mark and Space freq.]+[600 Hz]
LSB mode (for amateur RTTY):
[Setting frequency (displayed freq.)]=[Desired
freq.]+[Mark freq.]
The RS-R75 remote control software is available to
perform data setting and remote control of the receiver.
Refer to the diagram below for connection.
D System requirements
To use this program, the following hardware and software are required:
•IBM PC compatible computer
•An RS-232C serial port
•Microsoft®Windows®95 or Microsoft®Windows®98
•Intel i486DX4 processor or faster (Pentium®100
MHz or faster recommended)
•At least 16 MB RAM
•At least 10 MB of hard disk space
•At least 640 × 480 pixel, high color (16 bit) display
■ FSK and AFSK (SSTV) connections
TU or TNC
AF IN
SQUELCH IN
to [REC]to [REC
REMOTE]
2-conductor 3.5(d) plugs
Personal computer
Personal computer IC-R75
Supplied RS-232C cable (OPC-743)
4
11
FREQUENCY SETTING
■ Read me first
The receiver uses memory channels for storage of frequencies (as well as mode, tuning steps, etc.). When
turning power OFF or changing memory channels, the
previously displayed frequency cannot be recalled unless it has been stored into a memory channel.
Therefore, when you want to keep a displayed frequency for later recall, you must program it into a
memory channel by pushing [MW] for 2 sec.
See p.22 for details.
■ Using the keypad
q Push the numeral keys on the keypad to enter the
MHz digits for the desired frequency.
•If a key is mistakenly pushed, push [CLR] and star t
again from the beginning.
•When entering the same MHz digits as the displayed
frequency, this step can be skipped.
w Push [•] on the keypad.
e Push the numeral keys to enter the frequency digits
below 1 MHz.
•If a key is mistakenly pushed, push [CLR] and star t
again from the beginning.
r Push [ENT] to set the input frequency.
•When pushing [ENT] after entering the MHz digits, zeros
are automatically entered for the kHz digits.
BLANKBLANK
S1 3
5
7
9
20 40
60
dB
AGCANT
USB
R X
VFO
1
“BLANK” appears above the memory channel
readout until [MW] is pushed for 2 sec.
Push [MW] for 2 sec. after tuning.
[EXAMPLE]: Setting the frequency using the keypad.
8
2
TUV
•To set to 28.00 MHz
USB
•To set to 21.050 MHz
USB
•To set to 850 kHz (0.850 MHz)
USB
•To change 14.19075 to 14.850 MHz
USB
ABC
R X
1
2
ABC
R X
.
0
QZ
R X
USB
USB
USB
.
R X
USB
ENT
R X
.
R X R X
8
5
TUV
JKL
R X
8
5
TUV
JKL
R X
USB
USB
USB
USB
USB
QZ
R X
ENT
0
5
JKL
USB
ENT
R X
ENT
R X
R X
USB
USB
R X
R X
R X
12
4
FREQUENCY SETTING
■ Frequency setting
Rotate the tuning dial to change the frequency.
•The frequency changes in increments determined by the
selected tuning step (see below).
•When the lock function is activated (“LOCK” appears), the
frequency cannot be changed via tuning dial.
Push [TS] one or more times to select a quick tuning
step.
D Programmable tuning steps
Programmable tuning steps are available to suit your
operating requirements.
These tuning steps are:
•Independently selectable for each mode
•Selectable from 0.1, 1, 5, 6.25, 9, 10, 12.5, 20, 25,
100 kHz
q Select the desired operating mode with [SSB],
[CW/RTTY], [AM] or [FM].(p.14)
w Push [TS] one or more times until the programma-
ble tuning step indicator , “",”appears above the 1
kHz.
•Rotating the tuning dial changes the frequency according to the set tuning step.
e Push [TS] for 2 sec. while the programmable tun-
ing step indicator appears to enter the tuning step
set mode.
r Rotate the tuning dial to set the desired tuning step
for the selected mode.
t Push [TS] to exit the tuning step set mode.
y Rotate the tuning dial to change the frequency ac-
cording to the set tuning step.
D 1 Hz and 10 Hz tuning steps
When both the 1 MHz tuning step and programmable
tuning step, “",” disappear, rotating the tuning dial
changes the frequency in increments of 1 or 10 Hz.
q Push [TS] one or more times until the programma-
ble tuning step indicator or 1 MHz tuning step indicator, “",”disappears.
w Push [TS] for 2 sec. to toggle between the 1 and
10 Hz step settings.
•When the 1 Hz step is selected, the 1 Hz digit appears
in the frequency indication; when the 10 Hz step is selected, the 1 Hz digit disappears from the frequency indication.
S1 3
579
20 40
USB
[TS]
R X
Programmable tuning
step indicator
BLANKBLANK
AGCANT
1
dB
60
VFO
10 kHz tuning step is
selected.
USB
S1 3
579
1
20 40
dB
60
TS
Push for 2 sec.
USB
S1 3
579
20 40
1
dB
60
R X
Rotating the tuning dial
BLANKBLANK
AGCANT
VFO
changes the frequency
in 10 Hz steps.
R X
Rotating the tuning dial
BLANKBLANK
AGCANT
VFO
changes the frequency
in 1 Hz steps.
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